Thinly slice the corrugate, peppers and onion. Brush with olive oil, and place under a medium grill for 8 - 10 minutes, turning once.
Toast the pita bread, slice open and fill with 1/4 of the vegetables. Add Soya vegan cheese spread to taste. Personally I put loads and loads in. If you want, you can then put this back under the grill so the spread melts.